(I’m a customer at a restaurant;there’s a huge sign outside that says, “Get endless refills your large soft drink for an extra 25p!”. However, they only have medium cups left. So, I fill up a medium and take it to the counter, figuring if I’m getting endless refills it doesn’t matter what cup size I’m using.)

Me: “They didn’t have any large cups left, but I want to do the endless refills offer.”

Cashier: “£2 please.”

Me: U”m… no. I want the endless refills offer.”

Cashier: “Yeah, you can get a refill once you’ve finished.”

Me: “And I don’t have to pay any more?”

Cashier: “No, you have to pay for another drink: £2.”

Me: “Doesn’t ‘endless refills’ mean that you can refill your drink as many times as you want for one price?”